633681049 has 4 divisors (see below), whose sum is σ = 633732660. Its totient is φ = 633629440.

The previous prime is 633681043. The next prime is 633681053. The reversal of 633681049 is 940186336.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 292170649 + 341510400 = 17093^2 + 18480^2 .

It is a cyclic number.

It is not a de Polignac number, because 633681049 - 2²⁹ = 96810137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (633681043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4389 + ... + 35869.

It is an arithmetic number, because the mean of its divisors is an integer number (158433165).

Almost surely, 2^633681049 is an apocalyptic number.

It is an amenable number.

633681049 is a deficient number, since it is larger than the sum of its proper divisors (51611).

633681049 is a wasteful number, since it uses less digits than its factorization.

633681049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51610.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 633681049 is about 25173.0222460475. The cubic root of 633681049 is about 858.9282886844.

The spelling of 633681049 in words is "six hundred thirty-three million, six hundred eighty-one thousand, forty-nine".